Find the equation of the line described. perpendicular to y = 5x + 3; passing through the point (4, 2).

Can someone me with this problem . show your work .

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point